Carburetor air intake filters

ABSTRACT

An annular pleated filter element with a vibrating-reed warning device clamping ends of the filter paper and being bonded to end gaskets.

e Elmte 1 States Patent 1191 1111 3,736,@

Nowicki 1 1 June 5, 1973 541 CARBURETOR AIR INTAKE FILTER 2,779,3051/1957 Dunkelman ..116/67 Inventor: Raymond ow ki, 30 Linn ';/1960 Goodall et al. ..210/90 X [1968 P1erce ..55/274 X Road Nuflfiy 071 103,529,407 9 1970 Nowicki ..55 274 [22] Filed: Jan. 10, 1972 3,540,40711/1970 McG0nagle..... 16/70 3,587,212 6/1971 Nowicki 155/274 [211 APPl-216,365 3,699,749 10 1972 Nowicki ..55/274 [52] U.S. Cl ..116/70,55/274, ll6/DIG. 25, Primary ExaminerL0uis J. Capozi 210/90 511 1m. 01...G0ll 19/12 57 ABSTRACT [58] Field of Search ..l16/67,65, 114 AD,

'1 16/124, 1 17, 124 D, 70, DIG. 25;,210/90, An annular pleated filterelement w1th a v1brat1ng-reed 184/] 55/274 277 270 521, DIG 4 warningdevice clamping ends of the filter paper and being bonded to endgaskets. [56] References Cited UNITED STATES PATENTS 6/1932 Smith..55/274 1 Claim, 4 Drawing Figures CARBURETOR AIR INTAKE FILTERS Thisinvention relates to air filters. An annular pleated filter with aanti-pollution warning device in combination with a filter paper couplercoupling the free ends of the pleated filter paper completing an airfilter circle which is bonded to the top and bottom end gaskets.

Automobile owners, service stations and repair shops have no way todetermine the condition of automobile and truck carburetor air intakefilters, a major cause of excessive exhaust fumes. The only means theyhave to determine the condition of auto air filters is compressed airhoses and a drop light. This has been the only way to determine thecondition of a carburetor air intake filter to see if it is up tomanufacturers specifications and in need of replacement, and in the meantime automobiles and trucks are burning excessive gas, excessive oil,have a loss of power, and engine failure which causes many accidents onthe road. Unecessary wear on the engine, improper mixture of air andfuel are major causes of carburetor fires, and also cause excessivesmoke from the exhaust system.

It is therefore an object of this invention to improve carburetor airintake filter elements with a combination vacumn sensing sound producingvibrating warning reed coupler which is in combination with a filterpaper coupler, coupling the free ends of the pleated filter paper. Thedevice is to warn the operator ofa motor vehicle which is being operatedthat it is emitting excessive exhaust fumes due to a clogged carburetorair intake filter element which needs immediate replacing. The warningsound from the combination vacumn sensing sound producing vibratingwarning reed and coupler will only sound off when the carburetor airintake drops below automobile manufacturers specifications. With therunning of the engine the warning sound will indicate that thecarburetor air intake filter is clogged and the warning device willcontinue to sound until the carburetor air intake filter element isreplaced with a new one.

These prominent objects are accomplished by the novel construction andarrangement of parts hereinafter described and shown in the accompanyingdrawings constituting an essential component of this disclosure, and inwhich:

FIG. 1 illustrates my improved carburetor air filter element incombination with an anti-pollution warning device which is a combinationwarning post and filter paper free end coupler.

FIG. 2 shows a disassembled view of the device and its components.

FIG. 3 shows the free ends of the filter paper coupled to the flexibleclamping jaws and the outer restriction screens positioned into thechannels.

FIG. 4 is a sectional view of the assembled position of the components.

Referring in greater detail to the drawings the device in FIG. 1 will beseen to consist of a carburetor air intake filter element in combinationwith an auto air pollution warning post coupler 16 having a pair offlexible clamping jaws 19 on each side of warning post coupler 16 forthe purpose of clamping and securing the free ends of the filteringpaper 20 completing a filtering circle which is then bonded to the topand bottom end gaskets 21 preventing by-pass of air. A clearer view ofthe flexible clamping jaws 19 is shown in FIG. 3. FIG. 2 the warningpost coupler 16 having an aperture 17 therethrough has within saidaperture 17 an annular inner shoulder 28. Seated on the annular innershoulder 28 is a dust protective stainless steel silk screen 22extending across the aperture and seated on the protective silk screenis an O-ring spacer 23 overlaying the inner shoulder 28. Having seatedon the O-ring spacer 23 and supported within the aperture 17 is aprecalibrated vacumn sensing sound producing vibrating warning reed 24which is press fitted into said aperture 17 followed by a flexible dustprotective cover 25 which is seated and supported within the circularreed 24. The flexible dust protective cover 25 is of any suitablematerial such as thin paper, and is for the purpose of closing off allair suction through the aperture 17 until the air filter 15 becomesclogged. When the air filter 15 becomes clogged the suction of air willthen force the dust protective cover 25 out of the vibrating reed 24thereby permitting the suction of air through the aperture 17 and willthen activate the vibrating warning reed 24 producing a warning soundindicating a clogged air filter. The device 16 having two pairs ofchannels 27 into which outer restriction screens 26 are inserted intofor the purpose of reducing dust and foreign matter from coming incontact with the dust protective stainless silk screen 22 which issupported within the aperture 17. Referring to FIG. 3 the flexibleclamping jaws 19 on each side of the warning device 16 shows how thefree ends of the filtering paper 20 are clamped and secured intoposition. The outer restriction screens 26 are shown inserted into thechannels 27. A more clearer view is shown in FIG. 4.

It is to be understood that the device and warning reed will vary insize and design to accomodate different sizes and designs of airfilters. With the device installed and in operation in its factoryspecified carburetor base and housing it will produce a warning soundwhen in need of replacement.

From the foregoing it will be seen that a novel unusually practicaldevice for the purpose has been shown and described in its best knownembodiments.

What is claimed as new and sought to secure by Letters Patent is:

1. An anti-pollution warning device in combination with an air intakeannular pleated filter element comprising of a warning post couplerdevice having an aperture therethrough with a recessed annular innershoulder, seated on the annular inner shoulder is a dust protective silkscreen extending across the aperture, an O-ring spacer seated on thesilk screen and overlaying the shoulder, seated on the O-ring spacer isa precalibrated vacumn sensing sound producing vibrating reed securedwithin the aperture, seated and supported within the reed is a flexibledust protective cover, the flexible dust protective cover is for thepurpose of closing off all air suction through the aperture until theair filter becomes clogged, when the air filter becomes clogged thesuction of air will then force out the flexible dust protective coverout of the reed thereby permitting the suction of air through theaperture and will then activate the vibrating warning reed producing awarning sound indicating a clogged air filter, the device having twopairs of channels into which outer dust and foreign matter restrictionscreens are inserted, each side of the warning post coupler having apair of flexible self-clamping jaws, the free ends of the pleatedfiltering paper being positioned between the flexible jaws, whereby thefree ends of the filter paper are clamped and secured in position adusttight coupling, the completed filter ring paper 'circle with thedevice being bonded to the top and bottom end gaskets of filter.

1. An anti-pollution warning device in combination with an air intakeannular pleated filter element comprising of a warning post couplerdevice having an aperture therethrough with a recessed annular innershoulder, seated on the annular inner shoulder is a dust protective silkscreen extending across the aperture, an O-ring spacer seated on thesilk screen and overlaying the shoulder, seated on the O-ring spacer isa precalibrated vacumn sensing sound producing vibrating reed securedwithin the aperture, seated and supported within the reed is a flexibledust protective cover, the flexible dust protective cover is for thepurpose of closing off all air suction through the aperture until theair filter becomes clogged, when the air filter becomes clogged thesuction of air will then force out the flexible dust protective coverout of the reed thereby permitting the suction of air through theaperture and will then activate the vibrating warning reed producing awarning sound indicating a clogged air filter, the device having twopairs of channels into which outer dust and foreign matter restrictionscreens are inserted, each side of the warning post coupler having apair of flexible self-clamping jaws, the free ends of the pleatedfiltering paper being positioned between the flexible jaws, whereby thefree ends of the filter paper are clamped and secured in position adusttight coupling, the completed filter ring paper circle with thedevice being bonded to the top and bottom end gaskets of filter.